YIRAN LI <mrfun.china <at> gmail.com> writes: > ffmpeg.exe -i a.mp4 -c:v mpeg4 -profile:v 15 -vtag DIVX > -bufsize 3080000 -maxrate 8000000 -bt 8000000 -an a.avi > (so that maxbitrate will be 8000kbps)
You forgot to set the video bitrate. [...] > 1. for mpeg4 encoder, what qscale value is good enough > to keep same quality as input? Old MEncoder documentation recommends a value of 2 but I don't think this is what you want. > 2. if -q:v, -maxrate -bt are used together, no matter > what qscale value specified, bitrate will be guaranteed > to be below maxrate? I don't think so: It would mean that qscale gets ignored. Please do not cross-post, it is considered rude everywhere. Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
